载荷及老化因素对地板减震系统振动传递率的影响

通过对地板减震系统施加不同载荷以及更换不同老化程度的橡胶减震器，研究载荷及老化因素对地板减震系统振动传递率的影响规律。结果表明：载荷对地板减震系统振动传递率的影响主要集中在10～25 Hz频率范围内，在此范围，载荷越小，振动传递率越大；橡胶减震器老化程度越大，振动传递率越大，并且两者呈非线性关系，建立的橡胶减震器老化减震性能损失率与振动传递率的数学模型可用于地板减震系统的优化设计。;The influence of load and aging factors on the vibration transmission rate of floor damping system was studied by applying different loads on the EMU floor damping system and replacing the rubber damper with different aging degrees. The results showed that the influence of load on the vibration transmission rate of the floor damping system was mainly concentrated on the frequency range of 10～25 Hz. In this range，the smaller the load，the higher the transmission rate was. When the damping performance loss rate of the rubber damper was greater，the vibration transmission rate was greater，and the relationship between them was non-linear. The mathematical model of the damping performance loss rate of the rubber damper after aging and the vibration transmission rate was established，and it could be used in optimizing the design of the floor damping system